Literaturdatenbank
Literaturdatenbank |
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Bower, D. S., & Hodges, K. M. (2014). Chelodina expansa gray 1857 – broad-shelled turtle, giant snake-necked turtle. In A. G. J. Rhodin, P. C. H. Pritchard, P. P. van Dijk, P. A. Saumure, K. A. Buhlmann & J. B.Iverson (Eds.), Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group Vol. 5IUCN/SSC Tortoise and Freshwater Turtle Specialist Group.
Added by: Sarina Wunderlich (06 Jul 2014 16:10:33 UTC) |
| Resource type: Book Article DOI: 10.3854/crm.5.071.expansa.v1.2014 BibTeX citation key: Bower2014 View all bibliographic details  |
Categories: General Keywords: Australien - Australia, Emydidae, Emys orbicularis, Habitat - habitat, Schildkröten - turtles + tortoises Creators: B.Iverson, Bower, Buhlmann, van Dijk, Hodges, Pritchard, Rhodin, Saumure Publisher: IUCN/SSC Tortoise and Freshwater Turtle Specialist Group Collection: Conservation Biology of Freshwater Turtles and Tortoises: A Compilation Project of the IUCN/SSC Tortoise and Freshwater Turtle Specialist Group |
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| URLs http://www.iucn-tftsg.org/cbftt/ |
| Abstract |
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Summary. – Australia’s largest snake-necked turtle, Chelodina (Macrochelodina) expansa (Family Chelidae), occurs broadly through the inland rivers and billabongs of eastern and southeastern Australia. The species is cryptic in habit, yet occupies waters heavily exploited and regulated by humans. Traditionally considered a riverine species, recent studies demonstrate that it is more frequently represented in permanent lakes and billabongs connected to main river channels. Typical of many freshwater turtles, C. expansa displays delayed maturity and high adult survivorship. It is carnivorous and feeds primarily on fast-moving prey such as crustaceans and fish, but will also consume carrion. The reproductive biology of C. expansa sets it apart from most other turtles; in response to low temperatures, embryos enter a diapause, which enable them to survive over winter in nests, resulting in a year-long incubation period. Chelodina expansa has lower population densities than sympatric turtle species, which may increase its vulnerability to threats. Persistence of C. expansa relies on habitat quality and longitudinal connectivity of freshwater systems in southeastern Australia. Distribution. – Australia. Found throughout southeastern Australia, in the Murray-Darling Basin, and coastal rivers of southeastern Queensland from the Logan-Albert drainage in the south to the Fitzroy drainage in the north. Offshore populations occur on Fraser, Moreton, and Stradbroke islands, Queensland. Synonymy. – Chelodina expansa Gray 1857, Chelodina oblonga expansa, Macrochelodina expansa, Chelodina (Macrochelodina) expansa. Subspecies. – None currently recognized. Status. – IUCN 2013 Red List: Not Listed , TFTSG Draft Red List: Near Threatened (NT, assessed 2011); CITES: Not Listed; Australian EPBC Act: Not Listed.
Added by: Sarina Wunderlich |